1.花布长60米,是白布的1/4,白布长多少米?2.花布长60米,白布比花布多1/4,白布长多少米?3.花布长60米,比花布多1/_数学解答

1.花布长60米,是白布的1/4,白布长多少米?2.花布长60米,白布比花布多1/4,白布长多少米?
3.花布长60米,比花布多1/4,白布长多少米?
4.花布长60米,白布比花布少1/4,白布长多少米?
5.花布长60米,比白布少1/4,白布长多少米?

人气：248 ℃　时间：2020-04-08 15:34:46

解答

1：白布60/ 1/4=240米
2：白布60/(1-1/4)=80米
3：白布60/(1+1/4)=48米
4：白布60x(1-1/4)=45米
5、白布60x(1+1/4)=75米